Jennifer Lopez has been accused of "worming" her way into celebrations for Barack Obama's presidential inauguration.

The singer and her husband Marc Anthony infuriated Democratic Party supporters after the pair agreed to appear at the Latino Inaugural Ball despite failing to support the President-elect during his campaign.

One party member called the couple "vile opportunists for worming themselves into anything Obama related even though they had nothing to do with his win", reports the New York Post.

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Lopez has agreed to "speak" at the event, despite reportedly refusing to endorse the President-elect unless he called her personally.

Although he previously rejected an invitation to perform at a campaign rally in Orlando encouraging Latinos to vote, Anthony is expected to sing at the event in Washington DC on January 18.

A spokesperson for the couple rejected the criticism, saying that the pair are eager to show their support.

"Unlike Puffy [Sean Combs], they are doing something - they are performing. And lots of people, including Rihanna and Mariah Carey, are performing and didn't donate. A lot of celebrities are showing up as guests of magazines or political people and not paying anything or doing anything. Marc and Jennifer shouldn't be reviled for that."